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Full-Text Articles in Medical Sciences
Population Structure Of Limenitis Butterflies In Hickman, Kentucky, Mollie Johnson
Population Structure Of Limenitis Butterflies In Hickman, Kentucky, Mollie Johnson
Masters Theses & Specialist Projects
Two species of Limenitis butterflies occur along the Mississippi River at Hickman, Kentucky: the viceroy, L. archippus, and the red-spotted purple, L. arthemis astyanax. Limenitis archippus occurs at a frequency that is 10-30 times more abundant than its congener, L. arthemis astyanax. Interspecific matings between L. archippus and L. arthemis astyanax are very rare in the wild and give rise to a hybrid form Limenitis archippus X L. arthemis astyanax form rubidus. Only 7 heterospecific pairings between the parental species and 72 "rubidus" individuals have been documented in the wild in all of North America. Of these documented cases, 2 …
Effects Of Barren Reservoir On Upstream Fish Assemblages Of Barren River Tributaries, Mario Sullivan
Effects Of Barren Reservoir On Upstream Fish Assemblages Of Barren River Tributaries, Mario Sullivan
Masters Theses & Specialist Projects
The effects of dams have long been investigated by aquatic ecologists. However, most of the research has focused on the physio-chemical changes when a lotic system is turned into a lentic system, dams as barriers to migratory fishes, and the influence of introduced species often stocked into reservoirs. It has not been until relatively recently that the upstream effects have been studied. The central theme here is that while the dam proper creates a barrier it is possible that the resulting zone of standing water may also fragment streams from an otherwise connected river system. Stream adapted species that encounter …
Longitudinal Variation In Fish Community Along The Upper Green River Below The Green River Lake, Joshua Wilsey
Longitudinal Variation In Fish Community Along The Upper Green River Below The Green River Lake, Joshua Wilsey
Masters Theses & Specialist Projects
The impoundment of flowing waters can cause decreased variation in flow and temperature, reduce habitat availability, and decreased mean temperature below a reservoir. These types of alterations can influence fish communities. Twelve sites were sampled along the Upper Green river in order to address the potential influence of impoundment on fish communities below the Green River Lake. The habitat features: mean depth, flow, dominant substrate, embeddedness, percent riffle, run and pool were measured. Temperature probes were placed at each site in order to measure temperature over an extended period of time. Backpack electrofishing and seining was used to obtain fishes. …
Pcr-Ddge Comparison Of Fecal Bacteria From Captive And Wild Populations Of The Endangered San Esteban Island Chuckwalla (Sauromalus Varius), Tina Kelley
Masters Theses & Specialist Projects
Most modern reptiles are carnivorous or insectivorous, whereas less than 2% of the >7,800 currently recognized species are considered to be herbivorous. Of these, herbivory is confined entirely to lizards; less than 3% of known lizard species eat significant amounts of plants. Most, if not all, herbivorous animals utilize a population of symbiotic microorganisms which can break down plant structural polymers. This study analyzes the bacterial populations from fecal/uric acid deposits of wild and captive samples of the endangered, herbivorous San Esteban chuckwalla (Sauromalus varius: Iguanidae). Substrate and diet samples were also analyzed. Most studies of digestive symbionts use indirect …
Coregulation Of A Neighboring Est With Rhogap, Tia Hughes
Coregulation Of A Neighboring Est With Rhogap, Tia Hughes
Masters Theses & Specialist Projects
It has been reported that the crossveinless-c locus of Drosophila melanogaster corresponds the RhoGAP88C gene. This determination was based on three criteria: proximity in genetic map position, complementation tests, and similarity of phenotype between RhoGAP88C RNAi constructs and the phenotype of hypomorphic cv-c' mutant homozygotes, both of which eliminate posterior crossveins (Denholm et al. 2005). There are several genes that map to this region of chromosome 3, including both RhoGAP88C, and a poorly annotated PDZ-domain containing gene corresponding to Expressed Sequence Tag (EST) Clot 13975 (approximately 60 kb upstream from the RhoGAP88C transcriptional start). A P-element insertion P[PZ]l(3)06951 is located …